John Schreiber left Monday night’s game with right lat tightness in the top of the seventh inning against the Mariners.
Manager Alex Cora said after the game that Schreiber will go on the 15-day injured list, further shortening an already depleted bullpen.
“I’m frustrated obviously that I can’t compete for however long,” Schreiber said. “We’re going to evaluate tomorrow and get some really good results. We’ll see what happens.”
Schreiber took over for Brennan Bernardino and struck out Ty France for the second out of the inning with his team trailing, 5-1. Schreiber, however, could not complete the frame, leaving the field with Sox trainer Brandon Henry after delivering a strike to Julio Rodriguez.
“It tightened up pretty good there,” said Schreiber, who said the tightness in his shoulder has lingered through the year.
He’s uncertain if he will undergo an MRI or not, reiterating that he will know more Tuesday.
The Sox also optioned Bernardino following Monday’s outing. The Sox will have to make two moves (one could be added to the 40-man roster) in order to fill the two spots.